This document provides an overview of Wi-Fi Direct, a technology that enables direct device-to-device communication without requiring a wireless access point. It describes Wi-Fi Direct's architecture, including how devices establish a P2P group with one acting as the group owner and the others as clients. The document also covers Wi-Fi Direct's group formation processes, security using WPS, and power saving methods like opportunistic power save and notice of absence protocols. Wi-Fi Direct allows for mobility, immediate connectivity, and easy secure connections between devices.
Wi-Fi Direct allows direct device-to-device communication at speeds up to 250Mbps without requiring a wireless access point. It establishes a peer-to-peer (P2P) group with one device acting as the P2P Group Owner and other devices joining as P2P clients. Developers can enable Wi-Fi Direct in their Android apps by using the Wi-Fi P2P framework to discover peers, request to join groups, and transfer data between devices directly. Wi-Fi Direct supports use cases like content sharing, offline chat, and multi-player games between nearby Android devices.
Wi-Fi Direct allows devices to directly connect and exchange data without needing an existing Wi-Fi network or hotspot. One device acts as the Group Owner to which other devices connect. Key mechanisms defined for Wi-Fi Direct include device discovery, group formation, and power management features. Wi-Fi Direct aims to simplify connectivity for use cases like printing or sharing media directly between devices.
This technical report discusses WiFi Direct technology, which allows devices to directly communicate with each other over WiFi without an Internet connection or wireless access point. It describes how WiFi Direct uses device discovery, role negotiation, and security provisioning to enable devices to form groups and communicate securely. WiFi Direct supports data rates up to 250Mbps and has a coverage range of about 200 meters. It works in the 2.4GHz band and implements power management features to reduce power consumption for portable devices.
Jornada Formativa Qualcomm y Movilforum: Alljoynvideos
The document provides an overview of the AllJoyn development framework for enabling peer-to-peer connectivity between devices. It discusses what AllJoyn is, compares it to other P2P solutions, reviews AllJoyn fundamentals including its distributed software bus architecture and object model, and provides code snippets for connecting to the bus, registering bus objects and handlers, discovering services, creating sessions, and joining sessions.
Installing and Configuring the Access Grid Toolkit (AGTk) 2Videoguy
This document provides instructions for installing and configuring the Access Grid Toolkit (AGTk) 2.4 on a single computer running Microsoft Windows XP to set up a personal node. The key steps include downloading and installing Python, wxPython and the AGTk, requesting an identity certificate, configuring audio and video services, connecting to virtual venues like the ANL or NCSA lobbies, and testing the node. Configuration involves managing services, storing configurations, and setting an identity certificate as default. Bookmarking venues and testing on Thursdays is also recommended.
This document provides an overview of Wi-Fi Direct, a technology that enables direct device-to-device communication without requiring a wireless access point. It describes Wi-Fi Direct's architecture, including how devices establish a P2P group with one acting as the group owner and the others as clients. The document also covers Wi-Fi Direct's group formation processes, security using WPS, and power saving methods like opportunistic power save and notice of absence protocols. Wi-Fi Direct allows for mobility, immediate connectivity, and easy secure connections between devices.
Wi-Fi Direct allows direct device-to-device communication at speeds up to 250Mbps without requiring a wireless access point. It establishes a peer-to-peer (P2P) group with one device acting as the P2P Group Owner and other devices joining as P2P clients. Developers can enable Wi-Fi Direct in their Android apps by using the Wi-Fi P2P framework to discover peers, request to join groups, and transfer data between devices directly. Wi-Fi Direct supports use cases like content sharing, offline chat, and multi-player games between nearby Android devices.
Wi-Fi Direct allows devices to directly connect and exchange data without needing an existing Wi-Fi network or hotspot. One device acts as the Group Owner to which other devices connect. Key mechanisms defined for Wi-Fi Direct include device discovery, group formation, and power management features. Wi-Fi Direct aims to simplify connectivity for use cases like printing or sharing media directly between devices.
This technical report discusses WiFi Direct technology, which allows devices to directly communicate with each other over WiFi without an Internet connection or wireless access point. It describes how WiFi Direct uses device discovery, role negotiation, and security provisioning to enable devices to form groups and communicate securely. WiFi Direct supports data rates up to 250Mbps and has a coverage range of about 200 meters. It works in the 2.4GHz band and implements power management features to reduce power consumption for portable devices.
Jornada Formativa Qualcomm y Movilforum: Alljoynvideos
The document provides an overview of the AllJoyn development framework for enabling peer-to-peer connectivity between devices. It discusses what AllJoyn is, compares it to other P2P solutions, reviews AllJoyn fundamentals including its distributed software bus architecture and object model, and provides code snippets for connecting to the bus, registering bus objects and handlers, discovering services, creating sessions, and joining sessions.
Installing and Configuring the Access Grid Toolkit (AGTk) 2Videoguy
This document provides instructions for installing and configuring the Access Grid Toolkit (AGTk) 2.4 on a single computer running Microsoft Windows XP to set up a personal node. The key steps include downloading and installing Python, wxPython and the AGTk, requesting an identity certificate, configuring audio and video services, connecting to virtual venues like the ANL or NCSA lobbies, and testing the node. Configuration involves managing services, storing configurations, and setting an identity certificate as default. Bookmarking venues and testing on Thursdays is also recommended.
Messenger SDK WebRTC is a set of libraries which enable WebRTC-compatible voice calling, video chat, and P2P file sharing with no plugins! With Messenger SDK WebRTC, you can build WebRTC applications for all major platforms including Android, Internet Explorer, iOS, OS X, Safari, Windows, Windows RT, and more.
Messenger SDK WebRTC includes STUN/TURN/ICE for guaranteed connections on any fixed or mobile network, through any NAT or firewall, and on any device. Messenger SDK WebRTC works with any third-party signaling (e.g. Jingle, SIP, WebSync) and STUN/TURN server or service.
The document outlines 19 potential project titles for a Cisco summer internship in 2011. The projects cover a wide range of topics including network performance testing, automation, monitoring, management, and security tools.
This document outlines the software requirements specifications for a Wi-Fi Messenger app being developed by students Hashim Ali and Ahsan ul Haq. The app will allow users to share files and chat within Wi-Fi range without internet access. It covers introduction, literature review, problem definition, system requirements, and development planning using incremental model in chapters. The main goals are to provide a free, high-speed, and user-friendly app for sharing information between Android devices within the same Wi-Fi network.
Nexaweb transforms growth-limiting PowerBuilder and VB applications into modern web solutions, accessible to anyone from anywhere. The Nexaweb modernization platform and risk eliminating fixed cost, fixed-time guarantee has helped hundreds of companies modernize applications and transform their business.
Extreme is the only company in the industry that takes an architectural approach to bringing products to market (from R&D to product release). Everything we do and create is a part of this Software Defined Architecture [SDA]. Wireless LAN, Wired LAN, Data Center -- It starts with highly reliable, high performance infrastructure. This is our heritage and we have always been outstanding at this: WiFi, Campus LAN all the way to the Data Center. (Ranging from your user to the applications they consume.)
ExtremeXOS -- On top of this, we use a single consistent and differentiated OS call EXOS. (next gen HW will run on EXOS). Lots of companies make high performance hardware, so to truly offer value added differentiation; we include an integrated layer of software into our architecture.
Network Management & BYOD -- We fully integrate management across our entire portfolio. We are very proud that in only 5 months, NetSight became the management platform for the entire portfolio. This was an emphatic message to the market that we take a different approach aligned to our SDA. NetSight has a single, integrated database for all aspects of management. This streamlines operations, enables dynamic management and removes the manual aspect of correlating information.
Application Analytics -- Purview offers application layer analytics, so you can understand what is happening on your network, you can optimize your environment, help increase productivity and measure adoption. Purview allows you to deliver both tactical and strategic information to make better more rapid business decisions.
Finally, we offer orchestration across the entire architecture. Whether that infrastructure is multi-vendor or not. Orchestration within the data center is available across virtualized workloads and consolidated storage and compute. Extreme is the only company in the industry committed to this type of integration, backward compatibility and openness to support technology partners and third party vendors. Many in the industry have grown through M&A, successfully so, however it has led to a portfolio with lots of products that are not integrated through management or orchestration. Each time you add a product, it increases your complexity with the introduction of a new disparate management tool.
- Palo Alto Networks builds next-generation firewalls that can identify over 1,100 applications regardless of port or protocol, restoring visibility and control to the firewall.
- Traditional firewalls cannot control applications effectively as applications change but firewalls have not. Next-generation firewalls from Palo Alto Networks address this by identifying applications, users, and scanning content.
- These firewalls provide comprehensive visibility and policy control over application access and functionality with high-performance processing capabilities.
Messenger SDK is a mobile softphone toolkit which enables instant messaging, voice, and video conferencing based on SIP, XMPP, STUN, TURN, and ICE. Messenger SDK is the only mobile softphone toolkit which delivers instant, seamless, and guaranteed calls and voice and video quality over any fixed or mobile network, across any NAT or firewall, and on any device, with the added benefits of peer-to-peer media transport and carrier-grade scalability.
Understanding remote access technologies (Nov 16, 2011) (beginner)Henry Van Styn
Keynote presentation given on November 16th, 2011 for IMA (non-technical audience) on modern remote access technologies as well as background topics such as Internet routing, NAT, VPN, remote desktop, port forwarding, etc.
This document discusses controlling a remote PC using a mobile phone. The objectives are to start and stop applications, boot a remote server, access files, and control the mouse, keyboard, and other devices of the remote computer using a mobile phone. The requirements are a P4 computer, GSM modem, 6600 series mobile phone, and an internet connection. The development tools used are Java and Netbeans 6.0. The methodology allows various administrative works on the server through a GUI on the client application, which connects to and serves requests from different clients. Limitations include getting connection through firewalls and bandwidth limitations of up to 30kbps for GPRS connections.
VPNs extend private networks over shared public infrastructure like the internet. They use encryption and tunneling to securely connect multiple sites including remote offices, mobile users, and business partners. Common VPN technologies include IPSec, L2TP, PPTP, and SSL which provide security while tunneling non-IP traffic. VPNs lower networking costs compared to private WANs and facilitate remote access and extranet connections with better performance than traditional dial-up.
MS-SIP Library enables application developers to integrate Microsoft Lync presence, instant messaging, voice, video, and web conferencing into endpoints, servers, gateways, and services.
CounterPath is a leading developer of VoIP softphone applications, with over 100 employees. It aims to provide carrier-grade softphone solutions that are highly interoperable with existing infrastructures. Some challenges in deploying softphones and PBXes include simplifying installation and configuration, centralized management of credentials and directories, enabling remote upgrades, and ensuring interoperability between elements. CounterPath works with Digium, the creator of Asterisk, to provide tightly integrated softphone and PBX solutions that address these challenges.
AnyBandwidth Engine is a mobile voice and video engine which enables guaranteed voice and video quality for IP voice and video conferencing applications over any fixed or mobile network and on any device. AnyBandwidth Engine dynamically optimizes frame rate, picture quality and CPU capacity to deliver best possible VoIP and video experience possible – every time.
AnyBandwidth Engine has been deployed to more than 20 million subscribers by licensees including Comcast, FujiFilm, Intel, Maxis, Research in Motion, and more.
AnyBandwidth Engine can be deployed with other Eyeball Networks products as part of an end-to-end IM, voice, and video conferencing solution, or can be integrated with third-party products.
This document provides an overview of Jini technology. It begins with an introduction and history of Jini. It then discusses the goals, architecture and components of the Jini system, including the lookup service, discovery/join protocol, and distributed security system. It explains how Jini works, with services registering with the lookup service and clients finding services. It also covers the server-side processing and programming model of Jini. In closing, it discusses some applications and examples of Jini technology.
The document discusses free computer science eBooks and technology news that are being provided. It includes links to blogs sharing this free content and encourages clicking on advertisements to support their work. It then discusses the topics of wireless technologies and Wi-Fi networks in particular, covering introductions, architectures, elements, how they work, topologies and configurations.
Enterprise Border Session Controller (E-SBC) for Network Inter-Connectivity.
AnyConnect Gateway protects enterprise networks from attacks with topology hiding and provides secure delivery of SIP, voice, and video conferencing services. AnyConnect Gateway supports TLS encryption for secure SIP signaling and SRTP encryption and VPN connections for secure data transport with confidentiality, message authentication, and replay protection. Together these protocols protect voice, video conferencing, and unified communications from eavesdroppers, hackers and spoofers.
Materi Perkuliahan Jaringan Komputer Teknik Informatika Chapter 2Raga Yustia
The document discusses the application layer and network applications. It provides an overview of common network applications like email, web, FTP, and DNS. It describes the client-server and peer-to-peer architectures that applications can use. It also discusses how processes communicate with sockets and addresses and how application layer protocols define message formats and rules. The document examines what transport services different applications require in terms of data integrity, throughput, and timing.
The WLAN can be compared to the human body in its complexity. Similar methodology which is used to study the phenomenon in humans can be applied to study wireless systems when they are invaded by intruders such as foreign clients or malicious code.
The purpose of the human immune system is to defend against attacks from germs, viruses & foreign bodies. Likewise, the purpose of access point security software is to defend against attacks from intruders and hackers. But when the immune system fails to distinguish between healthy cells and foreign bodies, it mistakenly attacks and destroys healthy cells. This is called an autoimmunity disorder.
AirTight security researchers have discovered a similar autoimmunity disorder in select open source and commercial 802.11 AP implementations. This presentation for DEFCON16 demonstrates how this vulnerability provides an open door through which DoS attacks can still be launched.
5 Steps to a Secure Hybrid Architecture - Session Sponsored by Palo Alto Netw...Amazon Web Services
A hybrid Architecture is one of the easiest ways to securely address new application requirements and cloud-first development initiatives. This approach allows you to start small and expand as your requirements change while maintaining a strong security posture. In this session, you will learn the 5 key steps to building a hybrid architecture using the VM-Series next-generation firewall.
Speaker: Bisham Kishnani, Consulting Engineer (APJC) – DataCenter & Virtualization, Palo Alto Networks
Wifi Direct Based Chat And File Transfer Android ApplicationNitin Bhasin
This App allows you to share any kind of file present in SD card to other mobile phone directly at speed of 5+MBps. It even allows to click images shoot videos and directly dend to other device.It also allows to send drawings by having drawing pad in it in various colours and various brush sizes. Web-View is also implemented in it.
Link Of App At Amazon Store: http://www.amazon.com/Wifi-Direct-Chat-Transfer-Application/dp/B00TKFFMZO/ref=sr_1_1?s=mobile-apps&ie=UTF8&qid=1424009545&sr=1-1&keywords=Wifi+Direct+Chat+and+File+Transfer+Application
Messenger SDK WebRTC is a set of libraries which enable WebRTC-compatible voice calling, video chat, and P2P file sharing with no plugins! With Messenger SDK WebRTC, you can build WebRTC applications for all major platforms including Android, Internet Explorer, iOS, OS X, Safari, Windows, Windows RT, and more.
Messenger SDK WebRTC includes STUN/TURN/ICE for guaranteed connections on any fixed or mobile network, through any NAT or firewall, and on any device. Messenger SDK WebRTC works with any third-party signaling (e.g. Jingle, SIP, WebSync) and STUN/TURN server or service.
The document outlines 19 potential project titles for a Cisco summer internship in 2011. The projects cover a wide range of topics including network performance testing, automation, monitoring, management, and security tools.
This document outlines the software requirements specifications for a Wi-Fi Messenger app being developed by students Hashim Ali and Ahsan ul Haq. The app will allow users to share files and chat within Wi-Fi range without internet access. It covers introduction, literature review, problem definition, system requirements, and development planning using incremental model in chapters. The main goals are to provide a free, high-speed, and user-friendly app for sharing information between Android devices within the same Wi-Fi network.
Nexaweb transforms growth-limiting PowerBuilder and VB applications into modern web solutions, accessible to anyone from anywhere. The Nexaweb modernization platform and risk eliminating fixed cost, fixed-time guarantee has helped hundreds of companies modernize applications and transform their business.
Extreme is the only company in the industry that takes an architectural approach to bringing products to market (from R&D to product release). Everything we do and create is a part of this Software Defined Architecture [SDA]. Wireless LAN, Wired LAN, Data Center -- It starts with highly reliable, high performance infrastructure. This is our heritage and we have always been outstanding at this: WiFi, Campus LAN all the way to the Data Center. (Ranging from your user to the applications they consume.)
ExtremeXOS -- On top of this, we use a single consistent and differentiated OS call EXOS. (next gen HW will run on EXOS). Lots of companies make high performance hardware, so to truly offer value added differentiation; we include an integrated layer of software into our architecture.
Network Management & BYOD -- We fully integrate management across our entire portfolio. We are very proud that in only 5 months, NetSight became the management platform for the entire portfolio. This was an emphatic message to the market that we take a different approach aligned to our SDA. NetSight has a single, integrated database for all aspects of management. This streamlines operations, enables dynamic management and removes the manual aspect of correlating information.
Application Analytics -- Purview offers application layer analytics, so you can understand what is happening on your network, you can optimize your environment, help increase productivity and measure adoption. Purview allows you to deliver both tactical and strategic information to make better more rapid business decisions.
Finally, we offer orchestration across the entire architecture. Whether that infrastructure is multi-vendor or not. Orchestration within the data center is available across virtualized workloads and consolidated storage and compute. Extreme is the only company in the industry committed to this type of integration, backward compatibility and openness to support technology partners and third party vendors. Many in the industry have grown through M&A, successfully so, however it has led to a portfolio with lots of products that are not integrated through management or orchestration. Each time you add a product, it increases your complexity with the introduction of a new disparate management tool.
- Palo Alto Networks builds next-generation firewalls that can identify over 1,100 applications regardless of port or protocol, restoring visibility and control to the firewall.
- Traditional firewalls cannot control applications effectively as applications change but firewalls have not. Next-generation firewalls from Palo Alto Networks address this by identifying applications, users, and scanning content.
- These firewalls provide comprehensive visibility and policy control over application access and functionality with high-performance processing capabilities.
Messenger SDK is a mobile softphone toolkit which enables instant messaging, voice, and video conferencing based on SIP, XMPP, STUN, TURN, and ICE. Messenger SDK is the only mobile softphone toolkit which delivers instant, seamless, and guaranteed calls and voice and video quality over any fixed or mobile network, across any NAT or firewall, and on any device, with the added benefits of peer-to-peer media transport and carrier-grade scalability.
Understanding remote access technologies (Nov 16, 2011) (beginner)Henry Van Styn
Keynote presentation given on November 16th, 2011 for IMA (non-technical audience) on modern remote access technologies as well as background topics such as Internet routing, NAT, VPN, remote desktop, port forwarding, etc.
This document discusses controlling a remote PC using a mobile phone. The objectives are to start and stop applications, boot a remote server, access files, and control the mouse, keyboard, and other devices of the remote computer using a mobile phone. The requirements are a P4 computer, GSM modem, 6600 series mobile phone, and an internet connection. The development tools used are Java and Netbeans 6.0. The methodology allows various administrative works on the server through a GUI on the client application, which connects to and serves requests from different clients. Limitations include getting connection through firewalls and bandwidth limitations of up to 30kbps for GPRS connections.
VPNs extend private networks over shared public infrastructure like the internet. They use encryption and tunneling to securely connect multiple sites including remote offices, mobile users, and business partners. Common VPN technologies include IPSec, L2TP, PPTP, and SSL which provide security while tunneling non-IP traffic. VPNs lower networking costs compared to private WANs and facilitate remote access and extranet connections with better performance than traditional dial-up.
MS-SIP Library enables application developers to integrate Microsoft Lync presence, instant messaging, voice, video, and web conferencing into endpoints, servers, gateways, and services.
CounterPath is a leading developer of VoIP softphone applications, with over 100 employees. It aims to provide carrier-grade softphone solutions that are highly interoperable with existing infrastructures. Some challenges in deploying softphones and PBXes include simplifying installation and configuration, centralized management of credentials and directories, enabling remote upgrades, and ensuring interoperability between elements. CounterPath works with Digium, the creator of Asterisk, to provide tightly integrated softphone and PBX solutions that address these challenges.
AnyBandwidth Engine is a mobile voice and video engine which enables guaranteed voice and video quality for IP voice and video conferencing applications over any fixed or mobile network and on any device. AnyBandwidth Engine dynamically optimizes frame rate, picture quality and CPU capacity to deliver best possible VoIP and video experience possible – every time.
AnyBandwidth Engine has been deployed to more than 20 million subscribers by licensees including Comcast, FujiFilm, Intel, Maxis, Research in Motion, and more.
AnyBandwidth Engine can be deployed with other Eyeball Networks products as part of an end-to-end IM, voice, and video conferencing solution, or can be integrated with third-party products.
This document provides an overview of Jini technology. It begins with an introduction and history of Jini. It then discusses the goals, architecture and components of the Jini system, including the lookup service, discovery/join protocol, and distributed security system. It explains how Jini works, with services registering with the lookup service and clients finding services. It also covers the server-side processing and programming model of Jini. In closing, it discusses some applications and examples of Jini technology.
The document discusses free computer science eBooks and technology news that are being provided. It includes links to blogs sharing this free content and encourages clicking on advertisements to support their work. It then discusses the topics of wireless technologies and Wi-Fi networks in particular, covering introductions, architectures, elements, how they work, topologies and configurations.
Enterprise Border Session Controller (E-SBC) for Network Inter-Connectivity.
AnyConnect Gateway protects enterprise networks from attacks with topology hiding and provides secure delivery of SIP, voice, and video conferencing services. AnyConnect Gateway supports TLS encryption for secure SIP signaling and SRTP encryption and VPN connections for secure data transport with confidentiality, message authentication, and replay protection. Together these protocols protect voice, video conferencing, and unified communications from eavesdroppers, hackers and spoofers.
Materi Perkuliahan Jaringan Komputer Teknik Informatika Chapter 2Raga Yustia
The document discusses the application layer and network applications. It provides an overview of common network applications like email, web, FTP, and DNS. It describes the client-server and peer-to-peer architectures that applications can use. It also discusses how processes communicate with sockets and addresses and how application layer protocols define message formats and rules. The document examines what transport services different applications require in terms of data integrity, throughput, and timing.
The WLAN can be compared to the human body in its complexity. Similar methodology which is used to study the phenomenon in humans can be applied to study wireless systems when they are invaded by intruders such as foreign clients or malicious code.
The purpose of the human immune system is to defend against attacks from germs, viruses & foreign bodies. Likewise, the purpose of access point security software is to defend against attacks from intruders and hackers. But when the immune system fails to distinguish between healthy cells and foreign bodies, it mistakenly attacks and destroys healthy cells. This is called an autoimmunity disorder.
AirTight security researchers have discovered a similar autoimmunity disorder in select open source and commercial 802.11 AP implementations. This presentation for DEFCON16 demonstrates how this vulnerability provides an open door through which DoS attacks can still be launched.
5 Steps to a Secure Hybrid Architecture - Session Sponsored by Palo Alto Netw...Amazon Web Services
A hybrid Architecture is one of the easiest ways to securely address new application requirements and cloud-first development initiatives. This approach allows you to start small and expand as your requirements change while maintaining a strong security posture. In this session, you will learn the 5 key steps to building a hybrid architecture using the VM-Series next-generation firewall.
Speaker: Bisham Kishnani, Consulting Engineer (APJC) – DataCenter & Virtualization, Palo Alto Networks
Wifi Direct Based Chat And File Transfer Android ApplicationNitin Bhasin
This App allows you to share any kind of file present in SD card to other mobile phone directly at speed of 5+MBps. It even allows to click images shoot videos and directly dend to other device.It also allows to send drawings by having drawing pad in it in various colours and various brush sizes. Web-View is also implemented in it.
Link Of App At Amazon Store: http://www.amazon.com/Wifi-Direct-Chat-Transfer-Application/dp/B00TKFFMZO/ref=sr_1_1?s=mobile-apps&ie=UTF8&qid=1424009545&sr=1-1&keywords=Wifi+Direct+Chat+and+File+Transfer+Application
Second Progress Seminar 2013
The main objective of this project is to connect different people that are in the range of same Wi-Fi access point. This will be completely free and no external source of internet will be needed. The chat will be public, means messages will be broadcasted to every user that is connected. This application will be developed in the Java programming language using the android software development kit(SDK).The development platform or integrated development environment(IDE) is eclipse using the android development tools(ADT) Plug-in. We will develop an application where user does not need any web browser to chat with other user. It has its own user interface. The user can connect to any available Access Point for chat with another user connected with same access point. Tethering and portable hotspot utility available on android can also be used for creating an access point. User Datagram Protocol (UDP) is used for sending the packets across the network.
This document provides a project report for a chat application. It includes sections on certificates, acknowledgements, table of contents, introduction, system analysis, system specification, software architecture, system design details, and testing. The project aims to develop a chat application that allows users connected over a network to communicate via text in both public and private chat modes, with security measures for private chats. It provides specifications for the hardware, software, modules, and testing objectives of the chat application.
Boscochat- A free Wi-Fi ChatRoom in android final documentationSamaresh Debbarma
‘BOSCO’ is a name extracted from the full name Don Bosco, The Founder of selesian congregation and ‘CHAT’ which means chatting .With the availability of mobile computing devices, mobile users have a natural tendency to share information between them. Often mobile users want to have a meeting, even though it is not planned in advance and there is no Internet connection available. For instance, there may be situations that employees find themselves together in a meeting room, or friends or business acquaintances may encounter each other in an airport terminal, or some scholars and researchers may meet in a hotel ballroom for a conference or workshop. In those situations, requiring each user to connect to a wide area network to communicate with each other may not be convenient or practical because of the lack of Internet connectivity or because of the time or cost required for such a connection, So in those situations the “WiFi Chat Room” would help the employees to send and receive the information whit the employees want to share. This application will be based on “Android Operating system”. The chat messages sent are of two types:1. Public Chat Messages 2. Private chat Messages Public messages are delivered to all other chat clients nearby, while private messages are directed to a specific recipient. As in most chat applications, there is no history and clients do not expect to receive messages sent earlier or when disconnected. Disconnection can occur at any time while clients are exchanging messages.
O documento discute o Wi-fi Direct e seu uso no Android. Explica que o Wi-fi Direct permite conexões diretas entre dispositivos sem a necessidade de uma rede Wi-fi e lista alguns aplicativos que usam essa tecnologia. Também descreve como o Android oferece APIs para desenvolvedores implementarem o Wi-fi Direct em seus aplicativos.
Efficient and stable route selection by using cross layer concept for highly...Roopali Singh
Efficient and stable route selection by using cross layer concept for highly mobile network with predictive features by Rupali Singh, Gajendra Singh Dhakad
published in International Journal of Research & Technology, Volume 3, Issue 4_November_2015
HANDLING CROSS-LAYER ATTACKS USING NEIGHBORS MONITORING SCHEME AND SWARM INTE...Editor IJCATR
The standard MAC protocol widely used for Mobile Adhoc Networks (MANETs) is IEEE 802.11.
When attacks in MAC layer are left as such without paying attention, it could possibly disturb channel access and
consequently may cause wastage of resources in terms of bandwidth and power. In this paper, a swarm based detection
and defense technique is proposed for routing and MAC layer attacks in MANET. Using forward and backward ants,
the technique obtains mean value of nodes between the first received RREQ and RREP packets. Based on this
estimation, the source node decides the node as valid or malicious. Moreover the MAC layer parameters namely
number of neighbors identified by the MAC layer, number of neighbors identified by the routing layer, the number of
recent MAC receptions and the number of recent routing protocol receptions are used to determine the node state. The
source node uses these two node state estimation techniques to construct the reliable path to the destination. This
proposed technique improves the network performance and at the same time prevents attackers intelligently.
The Image Transport Protocol (ITP) aims to more quickly transfer JPEG image files with less redundancy compared to TCP. ITP is implemented over UDP to avoid unnecessary overhead from handshaking and allow out-of-order delivery of data units, improving image quality. The receiver controls retransmissions to prioritize important data units and reduce sender overhead. Analysis shows ITP provides benefits like lower latency, higher image quality, and improved performance metrics compared to TCP-based image transfer.
Improved Video Transmission over MANETs using MDSR with MDCijsrd.com
MANET does not have any fixed infrastructure, so the mobile nodes are free to move within a network which results in dynamic change of network topology. The Real-time video transport has rigid bandwidth, delay, and a loss requirement to support this application in Mobile Ad-Hoc Networks is a challenge. MANET consists of mobile nodes that cause frequent link failures. This link failure causes two main problems. First, when a route break occurs, all packets that have already transmitted on that route are dropped which degrades the video quality and it decreases the average packet delivery ratio (PDR). Second, the transmission of data traffic is halted for the time till a new route is discovered and it increasing the average end-to-end delay. For that we have proposed Node-Disjoint Multipath Routing Based on DSR Protocol with Multiple Description Coding Technique (MDC). Node-Disjoint Path means there is no common node between two paths and MDC encode a media source into two or more sub-bit streams. The sub-streams, also called descriptions. The experiment has been done using NS2 simulator with Evalvid for evaluating the video quality. Our proposed scheme will improve Packet Delivery Ratio, Throughput and Decreased Average End-to-End Delay.
Transport layer protocol for urgent data transmission in wsneSAT Journals
Abstract wireless sensor networks is a growing class of highly dynamic, complex network environment on top of which a wide range of applications, such as habitat monitoring, object tracking, precision agriculture, building monitoring and military systems are built. The real time applications often generate urgent data and one-time event notifications that need to be communicated reliably. The successful delivery of such information has a direct effect on the overall performance of the system. Reliable communication is important for sensor networks. Urgent data transmission has been a serious problem for Wireless sensor networks. WSN face difficulties in handling urgent data like congestion and reliability due to their unique requirements and constraints. Various protocols for congestion avoidance and reliability achievement for WSN have been proposed recently. Few of them have also worked on congestion elimination. These protocols try to minimize the problem using different mechanism. This paper explores these mechanisms and tries to find their features and limitations which directed us for our research. Keywords: Congestion, Reliability, Transport layer Protocol, Urgent data transmission, Wireless Sensor Network.
NNTP is a protocol for transmitting news articles and posts between Usenet servers on the internet. It was developed in the 1980s at the University of California, San Diego and University of California, Berkeley to allow users to read and post to online newsgroups from personal computers connected to the internet, as the UUCP network did not support this capability across different file systems. The NNTP protocol is still widely used today for accessing online newsgroups, though some newer protocols like IMAP can also be used.
A survey on different cross layer attacks and their defenses in manetsKhaleel Husain
This document summarizes various cross-layer attacks in mobile ad hoc networks (MANETs) and their defenses. It first introduces MANETs and discusses their vulnerabilities to security attacks. It then defines cross-layer attacks as attacks that are initiated at one layer but target another layer. The document surveys different types of cross-layer attacks that have been discovered, including interlayer attacks, denial of service attacks, and attacks against cooperation enforcement tools. It also discusses proposed defense mechanisms against these attacks. Finally, it suggests using particle swarm optimization instead of ant colony optimization to improve detection of cross-layer attacks in MANETs.
Ctcp a cross layer information based tcp for manetijasuc
Traditional TCP cannot detect link contention losses and route failure losses which occur in MANET and
considers every packet loss as congestion. This results in severe degradation of TCP performance. In this
research work, we modified the operations of TCP to adapt to network states. The cross-layer notifications
are used for adapting the congestion window and achieving better performance. We propose Cross-layer
information based Transmission Control Protocol (CTCP) which consists of four network states.
Decelerate state to recover from contention losses, Cautionary state to deal with route failures, Congested
state to handle network congestion and Normal state to be compatible with traditional TCP. Decelerate
state makes TCP slow down if the packet loss is believed to be due to contention rather than congestion.
Cautionary state suspends the TCP variables and after route reestablishment resumes with conservative
values. Congestion state calls congestion control when network is actually congested and normal state
works as standard TCP. Simulation results show that network state based CTCP is more appropriate for
MANET than packet loss based traditional TCP.
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The twelve-factor app is designed for continuous deployment by keeping the gap between development and production small. For example, make the time gap small, make the personnel gap small & make the tools gap small. Learn more about how a Cloud vendor must provide a platform for 12-factor / Cloud Native development and deployment with identified anti-patterns.
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This document provides an overview of an IoT technologies company and several case studies of IoT products and solutions they have developed. It discusses the company's focus on turning innovative ideas into products, providing embedded hardware and software systems and cloud platform services. It then summarizes several case studies, including smart home automation hubs, IoT gateways, a Zigbee gateway, a Zigbee-HomeKit gateway, a Windows 10 universal app for a connected home, and an Internet of Everything platform.
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Despite its grandiose-sounding title, this deck consists of just three slides showing the Scala 3 code to be rewritten whenever the details of the operators begin to fade away.
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Do you want Software for your Business? Visit Deuglo
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Deuglo follows seven steps methods for delivering their services to their customers. They called it the Software development life cycle process (SDLC).
Requirement — Collecting the Requirements is the first Phase in the SSLC process.
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Most important New features of Oracle 23c for DBAs and Developers. You can get more idea from my youtube channel video from https://youtu.be/XvL5WtaC20A
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Crescat is industry-trusted event management software, built by event professionals for event professionals. Founded in 2017, we have three key products tailored for the live event industry.
Crescat Event for concert promoters and event agencies. Crescat Venue for music venues, conference centers, wedding venues, concert halls and more. And Crescat Festival for festivals, conferences and complex events.
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If you plan events, run a venue or produce festivals and you're looking for ways to make your life easier, then we have a solution for you. Try our software for free or schedule a no-obligation demo with one of our product specialists today at crescat.io
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SQL has attained widespread adoption, but Business Intelligence tools still use their own higher level languages based upon a multidimensional paradigm. Composable calculations are what is missing from SQL, and we propose a new kind of column, called a measure, that attaches a calculation to a table. Like regular tables, tables with measures are composable and closed when used in queries.
SQL-with-measures has the power, conciseness and reusability of multidimensional languages but retains SQL semantics. Measure invocations can be expanded in place to simple, clear SQL.
To define the evaluation semantics for measures, we introduce context-sensitive expressions (a way to evaluate multidimensional expressions that is consistent with existing SQL semantics), a concept called evaluation context, and several operations for setting and modifying the evaluation context.
A talk at SIGMOD, June 9–15, 2024, Santiago, Chile
Authors: Julian Hyde (Google) and John Fremlin (Google)
https://doi.org/10.1145/3626246.3653374
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SOCRadar’s Aviation Industry, Quarterly Incident Report, provides an in-depth analysis of these threats, detected and examined through our extensive monitoring of hacker forums, Telegram channels, and dark web platforms.
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- These are slides of the talk given at InteNSE'23: The 1st International Workshop on Interpretability and Robustness in Neural Software Engineering, co-located with the 45th International Conference on Software Engineering, ICSE 2023, Melbourne Australia
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What are ERP Systems?
An ERP, or Enterprise Resource Planning, system provides your company with valuable information to help you make better decisions and boost your ROI. You should choose an ERP system based on your company’s specific needs. For instance, if you run a manufacturing or retail business, you will need an ERP system that efficiently manages inventory. A consulting firm, on the other hand, would benefit from an ERP system that enhances daily operations. Similarly, eCommerce stores would select an ERP system tailored to their needs.
Because different businesses have different requirements, ERP system functionalities can vary. Among the various ERP systems available, Odoo ERP is considered one of the best in the ERp market with more than 12 million global users today.
Odoo is an open-source ERP system initially designed for small to medium-sized businesses but now suitable for a wide range of companies. Odoo offers a scalable and configurable point-of-sale management solution and allows you to create customised modules for specific industries. Odoo is gaining more popularity because it is built in a way that allows easy customisation, has a user-friendly interface, and is affordable. Here, you will cover the main differences and get to know why Odoo is gaining attention despite the many other ERP systems available in the market.
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For more info visit us https://valintry360.com/solutions/health-life-sciences
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WWDC 2024 Keynote Review: For CocoaCoders AustinPatrick Weigel
Overview of WWDC 2024 Keynote Address.
Covers: Apple Intelligence, iOS18, macOS Sequoia, iPadOS, watchOS, visionOS, and Apple TV+.
Understandable dialogue on Apple TV+
On-device app controlling AI.
Access to ChatGPT with a guest appearance by Chief Data Thief Sam Altman!
App Locking! iPhone Mirroring! And a Calculator!!
3. 3
Applications
• Written in Java (it’s possible to write native
code & html / javascript also)
• Good separation (and corresponding
security) from other applications:
– Each application runs in its own process
– Each process has its own separate VM
– Each application is assigned a unique Linux
user ID – by default files of that application
are only visible to that application (can be
explicitly exported)
4. 4
Application Components
• Activities – visual user interface focused
on a single thing a user can do
• Services – no visual interface – they run in
the background
• Broadcast Receivers – receive and react
to broadcast announcements
• Content Providers – allow data exchange
between applications
5. 5
Activities
• Basic component of most applications
• Most applications have several activities
that start each other as needed
• Each is implemented as a subclass of the
base Activity class
6. 6
Activities – The View
• Each activity has a default window to draw
in (although it may prompt for dialogs or
notifications)
• The content of the window is a view or a
group of views (derived from View or
ViewGroup)
• Example of views: buttons, text fields,
scroll bars, menu items, check boxes, etc.
• View(Group) made visible via
Activity.setContentView() method.
7. 7
Services
• Does not have a visual interface
• Runs in the background indefinitely
• Examples
– Network Downloads
– Playing Music
– TCP/UDP Server
• You can bind to a an existing service and
control its operation
8. 8
Broadcast Receivers
• Receive and react to broadcast
announcements
• Extend the class BroadcastReceiver
• Examples of broadcasts:
– Low battery, power connected, shutdown,
timezone changed, etc.
– Other applications can initiate broadcasts
9. 9
Content Providers
• Makes some of the application data
available to other applications
• It’s the only way to transfer data between
applications in Android (no shared files,
shared memory, pipes, etc.)
• Extends the class ContentProvider;
• Other applications use a ContentResolver
object to access the data provided via a
ContentProvider
10. 10
Intents
• An intent is an Intent object with a message content.
• Activities, services and broadcast receivers are started
by intents. ContentProviders are started by
ContentResolvers:
– An activity is started by Context.startActivity(Intent intent) or
Activity.startActivityForResult(Intent intent, int RequestCode)
– A service is started by Context.startService(Intent service)
– An application can initiate a broadcast by using an Intent in any
of Context.sendBroadcast(Intent intent),
Context.sendOrderedBroadcast(), and
Context.sendStickyBroadcast()
11. 11
Shutting down components
• Activities
– Can terminate itself via finish();
– Can terminate other activities it started via finishActivity();
• Services
– Can terminate via stopSelf(); or Context.stopService();
• Content Providers
– Are only active when responding to ContentResolvers
• Broadcast Receivers
– Are only active when responding to broadcasts
12. 12
Android Manifest
• Its main purpose in life is to declare the components to the system:
<?xml version="1.0" encoding="utf-8"?>
<manifest . . . >
<application . . . >
<activity android:name="com.example.project.FreneticActivity"
android:icon="@drawable/small_pic.png"
android:label="@string/freneticLabel"
. . . >
</activity>
. . .
</application>
</manifest>
13. 13
Intent Filters
• Declare Intents handled by the current application (in the
AndroidManifest):
<?xml version="1.0" encoding="utf-8"?>
<manifest . . . >
<application . . . >
<activity android:name="com.example.project.FreneticActivity"
android:icon="@drawable/small_pic.png"
android:label="@string/freneticLabel"
. . . >
<intent-filter . . . >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter . . . >
<action android:name="com.example.project.BOUNCE" />
<data android:mimeType="image/jpeg" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
. . .
</application>
</manifest>
Shows in the
Launcher and
is the main
activity to
start
Handles JPEG
images in
some way
14. Accessing Hardware - wifi
• package
• android.net.wifi
• Provides classes to manage Wi-Fi functionality on the device.
• The Wi-Fi APIs provide a means by which applications can communicate with the lower-level wireless stack that
provides Wi-Fi network access. Almost all information from the device supplicant is available, including the
connected network's link speed, IP address, negotiation state, and more, plus information about other networks
that are available. Some other API features include the ability to scan, add, save, terminate and initiate Wi-Fi
connections.
• Some APIs may require the following user permissions:
• ACCESS_WIFI_STATE
• CHANGE_WIFI_STATE
• CHANGE_WIFI_MULTICAST_STATE
• Note: Not all Android-powered devices provide Wi-Fi functionality. If your application uses Wi-Fi, declare so with a
<uses-feature> element in the manifest file:
• <manifest ...>
• <uses-feature android:name="android.hardware.wifi" />
• ...
• </manifest>
15. class use case provided by android
• Classes
• ScanResult Describes information about a detected access point.
• WifiConfiguration A class representing a configured Wi-Fi network, including the security configuration.
• WifiConfiguration.AuthAlgorithm Recognized IEEE 802.11 authentication algorithms.
• WifiConfiguration.GroupCipher Recognized group ciphers.
• WifiConfiguration.KeyMgmt Recognized key management schemes.
• WifiConfiguration.PairwiseCipher Recognized pairwise ciphers for WPA.
• WifiConfiguration.ProtocolRecognized security protocols.
• WifiConfiguration.Status Possible status of a network configuration.
• WifiEnterpriseConfig Enterprise configuration details for Wi-Fi.
• WifiEnterpriseConfig.Eap The Extensible Authentication Protocol method used
• WifiEnterpriseConfig.Phase2 The inner authentication method used
• WifiInfo Describes the state of any Wifi connection that is active or is in the process of being set up.
• WifiManager This class provides the primary API for managing all aspects of Wi-Fi connectivity.
• WifiManager.MulticastLock Allows an application to receive Wifi Multicast packets.
• WifiManager.WifiLock Allows an application to keep the Wi-Fi radio awake.
• WifiManager.WpsCallback Interface for callback invocation on a start WPS action
• WpsInfo A class representing Wi-Fi Protected Setup
16. p2p - Peer 2 Peer
Peer 2 Peer Networking is type of
networking where there is no need
of any centralized server , eachnode
works as both server and client
Each node has particular ID
assigned , by which they can
identify internally , IP number for
example , there is no central dns
for assigning ID , depending on
number of nodes , ID's are assigned
No Central Server is Required for P2p based application
17. Wifi basic vs Wifi Direct
• WIFI - BASIC (central acces point)
• Conventional Wi-Fi networks are typically based on the
presence of controller devices known as wireless access
points.
• All nodes are connect to this AP / Router
• WIFI - Direct (p2p based)
• Wi-Fi Direct essentially embeds a software access point
("Soft AP"), into any device that must support Direct.The
soft AP provides a version of Wi-Fi Protected Setup with
its push-button or PIN-based setup.
18. Encryption
• Encryption is the process of encoding
messages or information in such a way that only
authorized parties can read it. Encryption does
not of itself prevent interception, but denies the
message content to the interceptor
19. keys in Encryption
• As shown in example suppose A send
message Hello (encrypted with key)
• that message in communication channel
will be %$#^^&%$#^**^% random
• Againg on B receiver side after
DeCryption
the message becames hello
• Hence , person who is not
authorised(does not have key) cannot
read the message
20. AES - Advance Encry. Sys.
• AES is based on a design principle known as a substitution-permutation network,
combination of both substitution and permutation, and is fast in both software and
hardware.[10] Unlike its predecessor DES, AES does not use a Feistel network.
AES is a variant of Rijndael which has a fixed block size of 128 bits, and a key size
of 128, 192, or 256 bits. By contrast, the Rijndael specification per se is specified
with block and key sizes that may be any multiple of 32 bits, both with a minimum of
128 and a maximum of 256 bits
• We can say it block sustitution system where 128 , 192 or 256 bits block are
substituted to provide encryption
21. wifi direct app code
• Java code logic
• chatbocactivity - Android Activity class
• custombroadcastreciever - Android Broadcast Reciever
• encryptor - Java Cypher
• mainactivity - Android Activity class
• mycustomservice - Android Service class
Layout Files
• activity_chat_box - the screen where chat occurs
• activity_main - Main home screen of app
22. Layout App
• Android uses various views & views
groups to display user & interact with user
• Our Main use is List View
• Home screen utilisez list view to display
peers
• And chat box screen display messages
24. Citation
• Android Studio 1.0
• JDK 7
• Android SDK version 21
• Gradle built script
• Java for logic coding & defination
• xml for layout defination
• xml for manifest & security permission
• java cypher for encryptor class